Revolving teeter



Dern 1i, 192s.A

O. LANGE REvoLvI'NG TEE'TER Filed Sept. 24, 1925 as sa NVENTOR. Oto Lange A TTORNE Y.

Patented Dec. ll, 1928.

UTDl il OTTO LANGE, OF CHICAGO, ILLNOIS.

nEvoLvINe Tnnrnn.

Application filed September 24, 1925. Serial No. 58,244.

This invention relates to revolving teeters or see-saws and has for its object the production of such a tester adapted not only for pleasure, but also for exercise. One of the objects of the invention is to provide a revolving toeter that can be used indoors when it is desired to provide regular exercise or for mere pleasure purposes. Another object is to provide an apparatus'that can be locked against oscillating and can then be used merely as a merry-go-round. Another object is to provide means so that the users of the machine can operate it and thereby obtain desirable exercise.

Of the accompanying drawings 1 is an elevation of a see-saw which embodies the features of my invention; Fig. 2 is an elevation of the same at 90 to the elevation of Fig. l; Fig. 3 is an enlarged cross section along the line 3--3 of Fig. 2; Fig. 4 is a vertical sectional view along the line 4-4 of Fig. 2; and Fig. 5 is an enlarged transverse sectional view along the line 5-5 of Fig. 2.

The apparatus comprises in general an or dinary see-saw board 10 which is pivotally mounted on a support 11 and is free to rotate around the support and also to be tilted as much as may be desired. In operation the operators sit on the ends of the board in the usual manner and operate it as a see-saw by means of their feet, or in any other suitable manner. As a merry-go-round the board is operated by means of operating arms 12 lined to levers 13. These levers pass through slots in the board 10 and are pivoted to the board in any suitable manner such as by means of pins 14. The lower ends of the levers 13 are pivoted to the ends of a link 1.5, so that the two levers are constrained to operate in unison. Pivoted to one of these levers is another link 16 which is adapted to coact with aratchet wheel 17. This co-action is produced by means of a pawl 18 which is pivotally associated with the inner end of the link 16. The ratchet wheel 17 is fixed to the support 11 and as the board 10 is rotatably mounted thereon it will be seen that operation forwardly and backwardly of the arms 12 will7 by means of the connecting levers and links in con junction with the ratchet wheel, force the board to rotate.

The support 11 comprises legs 25 fixed to l a sleeve 26. `Within this sleeve is slidably mounted a tube 27. Mounted on the upper end of the tube 27 is the ratchet wheel 17.

`l/Vithin the tube 27 is a rod 30 which rests upon the plate 23. Normally the plate 28 is supported by the cross piece 24; but if it is desired to elevate the see-saw, the tube 27 together with the plate 28 are elevated until the hooks 29 pass under the plate and thus supports it a material distance above the floor. Rotation of the plate 23 is prevented by guide pieces which are fixed to the piece 24. rlhe hooks 29 are pivoted to the plates 43 which are fixed to legs 25.

.By this arrangement it will be Seen that the board 10, together with the frame 31, is free to rotate with reference to the support, the frame being supported by the upper end of the rod 30, and being held in position by the tube 27 passing through an opening in the lower portion of the frame 31.

lf it is desired to lock the board 10 so as to prevent oscillations thereof the following mechanism may be used. The flanges 33 are materially elongated and a plurality of holes 35 are provided therein. These flanges are fixed to each side of the central portion of the board, and the pin 34 may be removed from one pair of holes in the flanges and the board shiftedso as to place the pin in another pair of holes and thus to shift the board longitudinally on the framework. Fixed to the framework is a bearing 38 in which is journaled a rod 39; and fined to this rod are arms 40 having fingers 42 adapted to pass into certain of the holes 35 when the rod 39 is suitably turned. An arm 41, fixed to the rod 39, may be used for turning the rod so as to pass .the .lingers into the holes 35. When the mechanism is so arranged the board is locke/d and vertical oscillations thereof are pi'evented. If the board is to be moved longitudinally on the support it is unlocked and the lingers are placed in other holes in the flanges 33 on opposite sides of the hole through which the pin 34 passes. In shifting the board longitudinally the pin is removed and placed in one of the holes in the link 16.

In order to assist in balancing the board 1() a weight 50 is mounted thereon for longi `tudinal movement. In this instance I prefer to slidably mount the weight on a rod 51 `which is fixed in any suitable manner to the board 10. Thus the board can be suitably balanced. with reference to the relative Weight of the operators` and longitudinal shitting of the board may in this manner often be obviated. A thumb screw 52 is used for preventing sliding;- of the Weight after it has been adjusted.

I claim as my invention: 1. A teeter Comprising' a support, a board mounted on said support for vertical oseillations and for horizontal rotations, and means Jfor looking; said board to prevent oscillations thereot` said means comprising' a bearing` mounted on said support` and a member journaled in said bearing, said member being; adapted to eoaot with said board to prevent oscillations thereof Wlien said member is rotated to its locking posi tion.

2. A teeter comprising,` a support, a rod rotatably mounted for vertical movement on said support, a board mounted on said rod for vertical oscillations and for longitudinal rotations; and means for elevating said rod with reference to said support, said means comprising; a hook fixed to said support and adapted tovsulpportthe lower end of said rod when it is elevated.

In testimony whereof, Iy hereunto set my hand.

oTTo LANGE. 

